Polymer foam sheet and barrier layer composite

Abstract

A moisture barrier layer-foamed polymeric composite sheet underlayment article comprising a foamed polymeric sheet and a moisture barrier layer adhered thereto is disclosed. In one aspect, cork particles are present in the composite.

1 . A composite comprising:
 a foamed polymeric sheet having a first surface and a second surface; and   a moisture barrier layer adjacent at least one of the first and the second surfaces.   
     
     
         2 . The composite of  claim 1 , wherein the foamed polymeric sheet is at least partially cross-linked. 
     
     
         3 . (canceled) 
     
     
         4 . The composite of  claim 1 , wherein the foamed polymeric sheet comprises a first average foam cell diameter distribution and a second average foam cell diameter distribution of foam cells less than the first average foam cell diameter distribution. 
     
     
         5 . The composite of  claim 4 , wherein a ratio of the first average foam cell diameter distribution to the second average foam cell diameter distribution is at least 6:1. 
     
     
         6 . (canceled) 
     
     
         7 . The composite of  claim 4 , wherein the first average foam cell diameter distribution is between 300 micron to 3500 micron and the second average foam cell diameter distribution is 1 micron to 50 micron. 
     
     
         8 . The composite of  claim 1 , further comprising cork particles, wherein the cork particles are of an average particle size of 300 micron to 1200 micron and the foamed polymeric sheet comprises an average foam cell diameter is between 500 micron to 3500 micron, wherein the foamed polymeric sheet comprises cork particles in an amount of between 1 PHR to 50 PHR. 
     
     
         9 . (canceled) 
     
     
         10 . (canceled) 
     
     
         11 . The composite of  claim 1 , wherein the moisture barrier layer comprises at least one of: a co-extruded thermoplastic-thermoplastic laminate film, a co-extruded thermoplastic-polyolefin vinyl acetate film, a co-extruded polyolefin-polyolefin laminate film, a co-extruded polyolefin-polyolefin vinyl acetate film, a co-extruded thermoplastic-cellulose laminate film, and a co-extruded cellulosic-polyolefin vinyl acetate film. 
     
     
         12 . The composite of  claim 1 , wherein at least a portion of the moisture barrier layer extends beyond at least one edge of the foamed polymer sheet. 
     
     
         13 . The composite of  claim 12 , wherein the at least a portion of moisture barrier layer extending beyond at least one edge of the foamed polymer sheet comprises an adhesive. 
     
     
         14 . A composite comprising:
 at least partially cross-linked foamed polymeric sheet; and   a moisture barrier layer adhered to at least one side of the foamed polymeric sheet, wherein the moisture vapor barrier layer is selected from a thermoplastic film or a co-extruded thermoplastic-thermoplastic laminate film.   
     
     
         15 . The composite of  claim 13 , wherein the foamed polymeric sheet is a low density polyethylene. 
     
     
         16 . The composite of  claim 14 , wherein the moisture barrier layer is at least one of: a co-extruded thermoplastic-polyolefin vinyl acetate film, a co-extruded polyolefin-polyolefin laminate film, a co-extruded polyolefin-polyolefin vinyl acetate film, a co-extruded thermoplastic-cellulose laminate film, or a co-extruded cellulosic-polyolefin vinyl acetate film. 
     
     
         17 . (canceled) 
     
     
         18 . The composite of  claim 14 , wherein the foamed polymeric sheet comprises a first average foam cell diameter distribution and a second average foam cell diameter distribution of foam cells less than the first average foam cell diameter distribution. 
     
     
         19 . The composite of  claim 18 , wherein a ratio of the first average foam cell diameter distribution to the second average foam cell diameter distribution is at least 6:1. 
     
     
         20 . (canceled) 
     
     
         21 . The composite of  claim 18 , wherein the first average foam cell diameter distribution is between 300 micron to 3500 micron and the second average foam cell diameter distribution is 1 micron to 50 micron. 
     
     
         22 . The composite of  claim 21 , further comprising cork particles, wherein the cork particles are of an average particle size of 300 micron to 1200 micron. 
     
     
         23 . (canceled) 
     
     
         24 . The composite of  claim 14 , wherein the moisture barrier layer extends beyond at least one edge of the foamed polymer sheet. 
     
     
         25 . The composite of  claim 24 , wherein the at least a portion of moisture barrier layer extending beyond at least one edge of the foamed polymer sheet comprises an adhesive.